import pymysql
import threading
import time
import urllib
import requests
 
# 打開數(shù)據(jù)庫連接
db = pymysql.connect("192.168.0.*", "username", "password", "databasename")
# 使用 cursor() 方法創(chuàng)建一個游標(biāo)對象 cursor
cursor = db.cursor()
# SQL 查詢語句
sql = "SELECT sku,url_6 FROM url_new where flag_6 is null and url_6<>'' "
  # 執(zhí)行SQL語句
cursor.execute(sql)
  # 獲取所有記錄列表
results = cursor.fetchall()
num = 0
for row in results:
  sku = row[0]
  url = row[1]
  html = requests.head(url) # 用head方法去請求資源頭
  re=html.status_code
  num = num + 1
  print(num,re)
  if re == 200:
    sql_2 = "UPDATE url_new SET flag_6 = 0 WHERE sku = '%s'" % sku
    try:
      # 執(zhí)行SQL語句
      cursor.execute(sql_2)
      #print(cursor.rowcount)
    except Exception as e:
      print(e)
      conn.rollback()
  if re == 404:
    sql_3 = "UPDATE url_new SET flag_6 = 1 WHERE sku = '%s'" % sku
    try:
      # 執(zhí)行SQL語句
      cursor.execute(sql_3)
      print(cursor.rowcount)
    except Exception as e:
      print(e)
      conn.rollback()
  db.commit()
db.close()